*
     * If unset, the [system-wide default][ProxySelector.getDefault] proxy selector will be used.
     */
    fun proxySelector(proxySelector: ProxySelector) =
      apply {
        if (proxySelector != this.proxySelector) {
          this.routeDatabase = null
        }

        this.proxySelector = proxySelector
      }

    /**

	public final fun -deprecated_protocols ()Ljava/util/List;
	public final fun -deprecated_proxy ()Ljava/net/Proxy;
	public final fun -deprecated_proxyAuthenticator ()Lokhttp3/Authenticator;
	public final fun -deprecated_proxySelector ()Ljava/net/ProxySelector;
	public final fun -deprecated_socketFactory ()Ljavax/net/SocketFactory;
	public final fun -deprecated_sslSocketFactory ()Ljavax/net/ssl/SSLSocketFactory;
	public final fun -deprecated_url ()Lokhttp3/HttpUrl;

    behavior was surprising because OkHttp was disregarding the user's specified configuration. If
    you need to customize proxy fallback behavior, implement your own `java.net.ProxySelector`.

 *  Fix: Support TLSv1.3 on devices that support it.

 *  Fix: Share pooled connections across equivalent `OkHttpClient` instances. Previous releases had